Device for controlling a hayrake from a remote point



Aug. 15, 1950 v. H.

DEVICE FOR CONTROLLING A HAY RAKE FROM A REMOTE POINT Filed July 12, 1948 SCHLENNER 2,519,074

FIG.|

INVENTOR VICTOR H- SCHLENNER ATTORNEYS Patented Aug. 15, 1950 UNITED DEVICE FOR CONTROLLING A HAYRAKE FROM A REMOTE POINT Victor H. Schlenner, Wood Lake, Minn.

Application July 12, 1948, Serial No. 38,203

3 Claims.

This-invention relates to trip mechanisms for hay rakes and the like and particularly to a device adapted to permit said trip mechanism to be operated from a, point remote of the hay rake.

Since most of the-hay rakes are now drawn by tractors which are located at some distance'ahead of the rake, it is-necessary for the farmer to either have an additionalm an riding the rake to operate the Smear 'to provide a device for permitting the mechanism of the hay'rake to be operated from the tractor. g

It is an object of my invention to provide a device adapted to normally hold the tines of a hay rake in ground engaging position and to controllably-release said hold-down mechanism and simultaneously lift said tines to dump the rake.

It is another object to provide a device adapted to be attached to a conventional hay rake for normally resiliently holding the tines in ground invention will more fully appear from the -fol-.

lowing description made in connection with the accompanying drawings wherein like reference characters refer to the same or similar parts throughout the several views and in which;

Fig. 1 is a top plan view of my device attached to a conventional hay rake; and

Fig. 2 is a top perspective view illustrating in detail the arrangement of my device in full lines and showing a fragmentary portion of a conventional hay rake in dotted lines.

A conventional hay rake is best shown in Fig. 1, and has a plurality of tines 5, a pair of transverse frame members 6 and a pair of diagonal frame members 7. The tines are mounted on a suitable bar 8 which is hinged to the rear of frame member 6 as by the hinges 9. A longitudinally disposed tongue HI has a pair of longitudinal frame members I I respectively mounted in spaced relation on the sides thereof and extends forwardly of the rake frame for connection to a tractor or the like. A conventional rake dumping mechanism is provided although only a fragmentary portion thereof is illustrated in the drawings. This dumping mechanism consists in a pair of toggle links it. and I3 to hold the rake in engagement with the ground and a conventional dumping mechanism with the dumping lever I4 which controllably operates a conventional pawl and ratchet dumping mechanism (not shown) A pivot pin I3a connects toggle links 12 and I3 and forms a knee joint l3b therebetween. The link' 12 is pivoted to the tine carrying bar 8 and link I3 is pivoted to forward transverse frame member 6, and a portion thereof extends forwardly thereof. A foot pressure plate [5 is fixed at the forward end of lever I3. The above specified operating mechanism for the hay rake is all part of conventional hay rakes.

The conventional drivers seat usually mounted on such hay rakes as the one illustrated, has been removed. The foot pressure plate 55 is usually operated by the foot of the driver sitting on the seat. To take the place of the foot pres-' sure of the operator on pressure plate It, I provide a hold-down lever it pivoted at one end to the forward transverse frame member and extending rearwardly therefrom to engage the lower edge of reartoggle link :2. The rear end portion of lever l6is doubled back to form a U-shaped element in which a suitable roller'll is journaled. The roller ll engages the under edge of link l2 to roll thereon. As best shown in Fig. 2, a spring supporting frame is is fixed to the two transverse rake frame members 8 and forms a rigid arched bridge therea-cross. A resilient hold-down element, such as the spring iii. is connected at the top to bridge l8 and at the bottom thereof to the outer swinging portion of pivoted hold-down arm it and resiliently pulls 11.10- wardly on toggle lever l2 to resiliently hold the rake in normal ground engaging position. A transversely disposed crank shaft 291 is journaled for oscillation in suitable bearings 2! which are mounted on longitudinal frame members i l. The shaft has knock-out crank arm 22 disposed directly above the pivotal knee joint I31) to positively engage the same and knock out said joint against the resilient force of spring 59.

A control lever 23 is fixed to an intermediate portion of shaft 20 as best shown in Fig. 2 and extends a short distance therebelow. A return spring 24 resiliently connects the lower depending portion of lever 23 with the bottom side of tongue ID. A control line such as the cable 25 is fixed in the top portion of lever 23 and extends forwardly therefrom to a point within easy reach of the operator driving the tractor (not shown). The upper portions of levers l4 and 23 are respectively interconnected as by a chain 25 so that the single control cable 25 will operate the knockout crank 22 substantially simultaneously with actuating of the dumping mechanism by shifting dumping lever 54 to operate the ratchet and pawl mechanism in the conventional manner.

After the rake has been dumped, the return spring 24 cooperates with hold-down spring 59 to return the rake into ground engaging position.

This resilient hold-down mechanism substantially simulates the foot pressure applied to pressure plate 05 when a rake operator is sitting on the rake in the conventional manner. This provides a substantial amount of flexibility for the rake and permits the tines to follow the contour of the ground surface.

It will be seen that I have provided a highlyefiicient hay rake trip mechanism which resilient: 1y holds the rake in ground engaging position to. simulate conventional foot pressure and which provides a positive knock-out crank which p erates substantially simultaneously with the dumping mechanism of the rake to controllably dump the same and thereafter to return the same to ground engaging position.

t w ll! o co rse e nders ood ha vari us menses ma e made he io tm deta n rensem ii a d ropo io o th ar without de a tin om, the. co e oi my n en ion.

elaim i n, h r ra se s h t e hav n a to e h QWIl' mechan m or ormall hol in the. tines i r undn a i g position and a. cc 1 ventional rake amning mechanism a t t-inmate qqmprisi ie; ho d-down eleme t a apt be r iliently en a e said Q r'QQ Q-QQY J. meek-1; ai m tores eniir h sa d tin erQu. i .n-

easin osit on a ogg e n c out member dap d t contro ia r re ease s he d icw'ri me a i n it the to le white .cQn o l .e 5 nneqt e wi h aid.

member r iter tin said,- Knockgi we n.

m aii w n id. hol -d wn mec nism has;

been; re as d. o m Sa k n a iar rake; of e ty h in trams structure. a wi l d-do n me nism io 0 i bly oldi he rak tin s in. round engagnosi iq d. a on nt na rake. d mpin mee a iisml r m n r l bl de ice aeha i t said. ha a e o e a n t e and: c mprising. o -do n; el men a apted; ta

e moun ed on i r ke ram nd: to resiliently ngeee said to l hold-d n, mechan sm n Shiite ble zel eii t e eto d iti v r tai the same in hold-down position, resilient means for urging said element into hold-down engagement with said toggle mechanism, a knock-out member adapted to be mounted on said frame for positive engagement with the toggle joint of said hold-down mechanism and adapted to release the same and common means extending outwardly from said rake for operating said knock-out memhe an id a e pin m mber?- contr from a point disposed in'spaeed relation from said rake.

3. In a hay rake of the type having a frame structure, a toggle hold-down for controllably holding the rake tines in ground engaging position and a conventional rake dumping mechanism; a remotely controllable device adapted to be attached to, said hay rake for operating the same, said device comprising a hold-down level adapted to be pivotally mounted on the frame structure of said hay rake and disposed substantially adjacent the; tessle mechamsm; f: said ak n. e eme m un ed on said le er er hiitab venga i said t g le-m ha i sm .ire. il1i te nne ted. w h a d pivot d a t r ermal r u ging said lement into e agement with sa d tog l mechan sm to. hold said ineeha iism n. h d-do n Ros item, a ki o k out cr nk. shaft. wan ed o be ionild; tor osci lati n. on aid a e frame for n: a in said tees-ls me han s esi-t ve v e lease lie same imiii hold-down po t a ver fixed to said crank shaft and adapted to be con-. nected o ai rate dumpin mechan sm o sci e-t said crank shait el ase aid. holecwi mech ii u stantia y s mul aneo sly, wi h. the ac 20a said lu ng, me an sm to p rmit said; te to; be dumped and clon ated contro ele ri nt e i ect d t ne 2 to sa d cran le r an Weed n o twardlr he e rom to a oint itii easy r h, Qt he op a e of a rac or ar usa d ak o pe it s i ak tote contra... lr op rated from s d rac r- V QTQ REFERENCES CITED The following references are oi record in the file ofthis patent:

UNITED STATES PAanNrs Number Name Date,

6 M e na -n'i-"-:':-" Q .1,, 1. 

